package com.cskaoyan.service;

import com.cskaoyan.mapper.AccountMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * @author stone
 * @date 2021/11/20 14:08
 */
@Service
public class AccountServiceImpl implements AccountService{

    @Autowired
    AccountMapper accountMapper;

    @Override
    public void transfer(int fromId, int destId, int money) {
        int fromMoney = accountMapper.selectMoneyById(fromId);
        int destMoney = accountMapper.selectMoneyById(destId);

        fromMoney -= money;
        destMoney += money;

        accountMapper.update(fromId, fromMoney);
        int i = 1 / 0;
        accountMapper.update(destId, destMoney);
    }
}
